Katyusha multiple rocket launchers are a type of
rocket artillery built and fielded by the
Soviet Union beginning in the
Second World War. They are
multiple rocket launchers able to deliver a devastating amount of explosives to an area target in a short period of time, although with low accuracy, and then take a relatively long period of time to reload. Compared to other types of
artillery, they are fragile but inexpensive. Katyushas of World War Two, the first
self-propelled artillery mass-produced by the Soviet Union, were usually mounted on trucks.